In the project tab - "join" page", please add after the MacOS supported version in (), that only Intel Macs are supported.

And for step 4 in downloading BOINC, please add after "enter project" URL, that you can only select the project from the project list.

And lastly, it says that you can select how many cores the project should use in the project settings menu, which is wrong, cause you can only select Ressource share, which will always be 100, unless you have 2 or more projects running at the same time, so please correct this too.