GNS3 0/0 -1 Port range question

in CCNA & CCENT
Hi, I have set up a topology in GNS3 and I want to configure trunk ports, the only thing is that I can't configure them for the 0/0 -1 etc.... They can only be set up using 1/1 - etc.... is this normal or am I doing something wrong?
Thanks in advance!
Thanks in advance!
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