[Solved] Error Bar - custom value range won't expand

Hi

I found a template online for creating a timelinr, and I'm using it for a study guide for work training. The aim is to trial it with my own training and then share it with colleagues to adapt for their own etc.

I've managed to customise the various elements to my own needs for all except the error bars. I've never used these before so they're a bit of a mystery.

I can't seem to get the custom/specified value range to expand beyond row 48 in the Duration column despite my current data ending at row 51. I will be adding more courses to this so obviously need to have the range expand.

Can anyone tell me what I'm doing wrong or how to fix it?

Thanks

Maybe this will help: https://support.microsoft.com/en-us/...5-864049a145f0

Almost at the bottom of the page: Change the error amount options