Hundred of checkboxes in multiple columns. each checkbox linked to the cell it's in. Checkbox columns are sometimes separated by pure data columns... ie: column B will have 365 checkboxs. Column C will have dates... '01 Jan 18' etc..Column D will have 365 checkboxes...
Each checkbox to be linked to the cell it's in.
Not sufficient to manually link 365 x 7 checkboxes......!
Solved by F. B. in 12 mins