1.) you need to create Group 1 with fields and set it 30%
– each field then is set to 100% (or what you want, but that 100% is 30% of screen)
2.) create second group Group 2 with gallery and set it to 70%
…on link, which I send you, there is documentation, how to get values.
Just one disadvantage of group field is – you are not able to check if that group contain any data or not…you can do it only subfield by subfield (or choose most important subfield and check only that – if you need to check it
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