KE30 - decimal places

Hello,

in KE35 I would like to define the number of decimals for a column (I would need 5 places after comma).

When I go to Formatting > Number format : I can select up to 3 decimals after comma. But the options 4 and 5 decimals are greyed out.

Any idea how we can select those?

Thank you.

Regards,

Becky