Thank you for your reply.
The second question came up when one of the players had 2 of his heroes on 2 different temples (one with a scroll track and the other with a torch track), both on the semifal step of the track and both temples had to be completed to gain a legendary item.
We rolled 2 scrolls and 2 torches on the same roll so he had to advance both heroes on the final track, but since completing both temples on the same turn does not advance the legendary item twice, we thought he could leave the hero on the temple that had to be completed last on the semifal step and advance his hero later on the next day or night.
The rulebook uses the phrase "may advance your hero" which implies that it is not mandatory to move your hero on the track.
F.13 in the FAQ confirms that scrolls/torches are optional.