Hello ! I wanted to make just the second horizontal line of a table doubled. However, there is no option of just drawing it, like with MS Office. I read this
https://help.libreoffice.org/latest/ro/text/scalc/guide/borders.html
and it looks like it’s supposed to be possible, but I have Libre Office 7.5.1.2 (Macbook Pro), there is no option “Format - Cells.” as instructed in the webpage. Could anyone please help me? I am on the verge of deciding whether to buy a Microsoft Office: I do have office (bought 2011), but it will no longer work if I update my OS (Mojave) to whatever is appropriate. I will appreciate your help!