XF 1.5 Increase the number of last-post characters in the Forum Home

[@abdur7man@]

Good evening, how are you?
How can I increase the number of last-page titles in the site's master

The selected dot is yellow :

 

[@abdur7man@]

??

 

[Mike]

That is just controlled by the size allocated to the area. You appear to have avatars added which take up more space, along with other add-ons/modifications.

You would need to modify the CSS directly to change the size of that area.