My survey consists of several blocks which must be completed in a certain order. For example, Block-3 is a prerequisite for Block-4 and Block-1 is a prerequisite for Block-3.
I want to add a TOC with all blocks listed at the beginning of survey. However, I want a block to become assessable from TOC only after its prerequisite blocks have been already completed . For example, Block-4 will become assessable from TOC only after both Block-1 and Block-3 have been completed.
By "already completed" I mean that, in prerequisite blocks, all questions with "force response" designation must be completed.
Effectively, I want to prevent a respondent skipping unanswered questions/blocks forward with help of TOC , but will allow jumping backwards.
In other words, I want to use TOC as a list of global anchors
Question
Making a block assessable from TOC only after its prerequisite blocks have been already completed
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