Glued Column. Where to Un-Glue it

Whenever I wish to resize a column then it shows me an error stating “You resized a glued column field, which then expanded automatically to fill in otherwise empty space”.

How do you resolve this Glued Column issue. Where do you set whether a column is glued or not?

Thank you for your time.

Hi

Nav fills your screen by default. In Nav 2009R2 for a form it is the HorzGlue for one of the columns which has been set to Both. Amend.

Neil