OK @andygp25 ,
I don't know what stage you are in your PowerApps journey, but it is very important that you understand the process I am showing below to be able to adapt it to your needs. If you cannot adapt this, the editable gallery I mentioned may also be an option.
The gallery on the left is simply based on a list with a couple of fields (Text and Number type) that currently have not data in them. I used one of each to show the format required. The check boxes are inserted into the gallery and are not connected to any data field. All the the field, list and control names where I have used My at the start will need to changed to your items. Firstly the Submit button you see has the following code
ForAll(
RenameColumns(
Filter(
MyGalleryName.AllItems,
MyCheckboxName.Value = true
),
"ID",
"IDRef"
),
UpdateIf(
MyListName,
ID = IDRef,
{
MyTextFieldName: MyTextControlName.Text,
MyNumberFieldName: Value(MyNumberControlName.Text)
}
)
)
I assume you are using SharePoint and will have a unique ID number to work with. When working, it looks like this
One thing to note is that the input fields do not need to be on a form - you can have them as standalone items on the screen and this will work exactly the same.
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