To bulk upload registers, first your excel should be in the correct format, with the dates along the top and the names in the first column. You can see download an example here.

Go to: https://app.plinth.org.uk/register-import and click in the dotted box

You should then see a list of dates:

If those are correct, click Next.

You will then be asked to enter the details of the Event/Session/Activity and click Next

You will then be asked to match people up to their Plinth profiles. Do this by clicking on the correct name.

Click on Save Register but only once. Once you have uploaded you should get a message at the top as above - that means it has worked.

Your registers are now uploaded.