To create projects after the upgrade:
If you wish to use an existing Plastic SCM repository, click the three dots next to the repository name, and select a repository from the list.
Select the type of workspace that fits your needs.
Plastic workspace With this workspace, you can work with branching and merging.
Gluon workspace This workspace tailored for artists allows you to pick the files you want to work on and check them back in without updating your whole workspace.
Add asset files associated with your project. Plastic SCM will display the project files from the asset folder in the Pending changes tab. You can choose specific files to include or add all to the repository by selecting the files and clicking Checkin changes.
Plastic SCM will automatically perform a check in for appropriate folders and files – such as package files and project settings – when it’s set up from the Unity Editor. You can view these in the Changesets tab.
Once your initial asset check in is complete, you’re set up with Plastic SCM for Unity and ready to create.