Index & match SUM multiple worksheets

Hi there,

I am struggling with this one.

I am trying to update a summary worksheet which lists all staff members and the total expenses associated to them across multiple worksheets

Is there are way I can do index & match against their name across multple worksheets to insert the sum of all values across all sheets?

If not, is there an easy way to vlookup for this as I really don't want to do it manually

Please help!