As those are both community contributed projects - and not official Camunda products - we don’t have any videos or tutorials on using or extending those. If you search around there are some community contributed tutorials on building a custom Tasklist application using the Tasklist API’s. The APIs are open, so you can implement it in whatever language you prefer.
I did a quick Google search for “camunda 8 custom tasklist” and found lots of great information. Here’s one video about implementing just the UI in React; this user who built a custom Tasklist with Vue.js; as well as many threads in this forum with users asking questions about implementing their own Tasklist.
Thank you, one last question on the topic. Can I assign a role to a user, for example, user Katy Lynn, such as the role of an application reviewer, where I mentioned the application reviewer in the lane of my process? Can I configure this using Camunda, or is it not supported?
Do I need to create a user interface for each task?
Task assignment is done on the User Task itself, not in the lane the task is in; so no, Camunda does not function in that way.
Whether you create a custom UI for each task is entirely up to you. Forms in Tasklist is powered by form-js. You can use that to render the forms you build in Modeler, or you can build your own UI. What is important is that the right data is returned to the process (the data from the task, and completing the task).