This page: https://indeni.atlassian.net/wiki/spaces/IKP/pages/63012870/Pushing+code+git
says very clearly: "Each contributor must create their own branch separately (branch out from "staging")..."
But this page: https://indeni.atlassian.net/wiki/spaces/IKP/pages/69959710/Using+SourceTree
says: "6. To create your own branch, in SourceTree, click the branch button.... In the below screenshot it says "Current branch: jontaa" but for you that will be "master".
I'll try to clean up the docs if someone can tell me which is correct.