How do I Add the ''For Sale'' Tag to a old Listing of mine?

[Forest fella]

Hi, I'm trying to find out how/if you can Add the For Sale Tag to a old Listing Title of mine?.
cheer's

 

[chas brookes]

Hi in the top right of your first post in thread there is normally a drop down box marked thread tools, edit title is normally there.
I am not sure if the option disappears on older threads though

 

[Forest fella]

Thanks for the info,I've had a look and there's only ''Edit Tags'' in the top left,so I changed that to ''for sale'',Hopefully that will work.
cheer's