Time picker card

I am trying to get a timer function for my pool working. I have downloaded and installed a custom component for entering the time. My issue is that i need to use this card twice in lovelace, once for the “on time” and once for the “off time”
When i put the card on my dashboard, it uses the entiry input_datetime.only_time. If i ad a second time picker card, it uses the same entity so i cant get it to perform a different fuction.
Not sure what to do about this

How does it use the same entity?
Do you have two separate input_datetime entities for both your needs?

type: entities
entities:
        - type: 'custom:time-picker-card'
          card_mod:
            style: |
              ha-card {
                  font-size: 20px !important;
                  transition: none !important;
                  margin-top: -13px
              }                
          entity: input_datetime.boiler_on_start
          name: Start
          minute_step: 1
          layout:
            embedded: true
        - type: 'custom:time-picker-card'
          card_mod:
            style: |
              ha-card {
                  font-size: 20px !important;
                  transition: none !important;
                  margin-top: -13px
              }                
          entity: input_datetime.boiler_on_end
          name: End
          minute_step: 1
          layout:
            embedded: true