How do I change space roles for a Reslash space?

You need to be a space owner to change space roles. To change the space roles, open up the sidebar by clicking on the arrow button in the top right corner. Click on the settings button on the top of the sidebar.

Click on space settings in the dropdown. The space settings will open up in a new tab.

Select 'Space Controls' from the left menu. Once you do, on the right side, you'll see 'Space Roles'. Here you can quickly change space roles for anyone in the space.