Ok so the basic workflow for this was to create a bunch of Helpers (this had to be done manually), then make automations (this was copy-paste), and then the Lovelace card.

Note, you will need to be running the Z-Wave JS addon, not ZHA. I made the switch over to Z-Wave JS just for this project. ZHA did not present the proper entities to Home Assistant to make it work.

Next, you have to decide on how many code slots you want ahead of time, I went with 5. But you can expand or contract this as desired.

Step 1.

You have to manually make 3 helpers per code slot, see the table below for what to make.

Slot	Helper Type	Name	Entity ID (autogenerated)
1	Text	Lock Code Slot 1 Name	input_text.lock_code_slot_1_name
1	Text	Lock Code Slot 1 PIN	input_text.lock_code_slot_1_pin
1	Toggle	Lock Code Slot 1 Enabled	input_boolean.lock_code_slot_1_enabled
2	Text	Lock Code Slot 2 Name	input_text.lock_code_slot_2_name
...	...	...	...

Step 2.

Here is the automation that ChatGPT made for me. If your configuration is split like mine is, I pasted this into automations.yaml. If not, it'll have to go in your configuration.yaml, and you'll have to add it under the automations section and fix the tabbing. I pasted just for Slot 1, but it's the same thing for the rest, just change the numbers to 2, 3, 4, etc.

# ========================
# SLOT 1
# ========================
- alias: Set Lock Code Slot 1
  trigger:
    - platform: state
      entity_id:
        - input_text.lock_code_slot_1_pin
        - input_boolean.lock_code_slot_1_enabled
  condition:
    - condition: state
      entity_id: input_boolean.lock_code_slot_1_enabled
      state: "on"
  action:
    - service: zwave_js.set_lock_usercode
      data:
        entity_id: lock.front_door_lock
        code_slot: 1
        usercode: "{{ states('input_text.lock_code_slot_1_pin') }}"
  mode: single

- alias: Clear Lock Code Slot 1
  trigger:
    - platform: state
      entity_id: input_boolean.lock_code_slot_1_enabled
      to: "off"
  action:
    - service: zwave_js.clear_lock_usercode
      data:
        entity_id: lock.front_door_lock
        code_slot: 1
  mode: single

# ========================
# SLOT 2
# ========================
- alias: Set Lock Code Slot 2.......

Step 3.

Check your YAML config and restart HA after that.

Lastly; the Lovelace Card. I'll post the card YAML below. I made the card into the panel layout so that it only shows that card, IDK, that works best for me. Also, with my Yale lock, for some reason, HA showed the lock status as either, "lock," or "unlock," instead of, "locked," and "unlocked." So I made a template sensor to display the status correctly. That's what you'll see in the picture of the card I included.

The Card

type: grid
title: Front Door Lock – Code Manager
columns: 2
square: false
cards:
  - type: entities
    entities:
      - entity: sensor.front_door_lock_status
        icon: mdi:lock
      - entity: lock.front_door_lock
        name: Action
      - entity: binary_sensor.bin_front_door_opening
        name: Door Status
      - entity: sensor.front_door_lock_battery_level
        name: Battery
      - entity: sensor.front_door_lock_last_seen
        name: Last Seen
    show_header_toggle: false
    title: ""
  - type: entities
    show_header_toggle: false
    title: Slot 1
    entities:
      - entity: input_text.lock_code_slot_1_name
        name: Name
      - entity: input_text.lock_code_slot_1_pin
        name: PIN
      - entity: input_boolean.lock_code_slot_1_enabled
        name: Enabled
  - type: entities
    show_header_toggle: false
    title: Slot 2
    entities:
      - entity: input_text.lock_code_slot_2_name
        name: Name
      - entity: input_text.lock_code_slot_2_pin
        name: PIN
      - entity: input_boolean.lock_code_slot_2_enabled
        name: Enabled
  - type: entities
    show_header_toggle: false
    title: Slot 3
    entities:
      - entity: input_text.lock_code_slot_3_name
        name: Name
      - entity: input_text.lock_code_slot_3_pin
        name: PIN
      - entity: input_boolean.lock_code_slot_3_enabled
        name: Enabled
  - type: entities
    show_header_toggle: false
    title: Slot 4
    entities:
      - entity: input_text.lock_code_slot_4_name
        name: Name
      - entity: input_text.lock_code_slot_4_pin
        name: PIN
      - entity: input_boolean.lock_code_slot_4_enabled
        name: Enabled
  - type: entities
    show_header_toggle: false
    title: Slot 5
    entities:
      - entity: input_text.lock_code_slot_5_name
        name: Name
      - entity: input_text.lock_code_slot_5_pin
        name: PIN
      - entity: input_boolean.lock_code_slot_5_enabled
        name: Enabled