Migrating Permissions from Gitolite to GitLab

Could someone please help me understand how could we migrate permissions from Gitolite to Gitlab. If my understanding is correct, Gitolite has permissions in terms of RW whereas Gitlab has used descriptive names such as Guest, Developer, etc. So when we import Gitolite repos to Gitlab, I am assuming the permissions do not get migrated. If it is correct, what would be the best way to migrate/map permissions between gitolite and gitlab. Would we need to make groups with permissions manually or via a script. Similarly, would we need to copy over the ssh keys of members for git shell.

Any help would be highly appreciated as I am new to this migration between gitolie and gitlab.

Thank you very much.

It might worth checking out Migrate repositories from Gitolite to GitLab