This is for listing the personal activities in the PR application for the last 10 years and not for "Work History".
In the express entry profile, i have only claimed 1 year of Canadian work experience and not any of my foreign work experience since I don't have the supporting documents.
I'm stuck with this too.
On the CIC website for documents to upload post ITA it says this:
To prove each work experience claim and to validate that the applicant meets program requirements
Document requirements
The personalized document checklist in MyCIC prompts the applicant with an upload field for each work experience declared.
At completeness check, the processing office only determines whether the required documents are included. The validity or fraudulence of the information is assessed only if and when the application is placed into processing.
The following documents are mandatory for each work experience declared:
So what it is saying, i think, is that you claim you are an IT manager...prove it. You haven't claimed that 8 years ago you were stacking shelves in a supermarket but you have mentioned it in your personal history(what were you doing in 2007) so you don't need to prove it.