How to panelize gerber files?
The panel I want to order is with four different designs.
And I used two different softwares, which are Altium and Eagle.
Altium has tool for panelizing boards designed in it, but I don't think it can put designs from other programs on the panel.
Can you supply any suggestions of panelizing these pcbs?
utility GerbMerge can help you a lot. The utility can be found: https://www.gedasymbols.org/user/stefan_tauner/tools/gerbmerge/doc/#Running .
Generating all files into Gerber files and combining it or take the advice from Naz. If it is a sample order, leave it to your fabricator who can make it by their own .Anyway, A good communication with the vendor can help you a lot.