Please help me understand the concept

I found a thread where it says below:

'Really the headline present tense is equivalent to a perfect tense in ordinary text. The headline is more immediate. Let's what news stories are on top of the BBC website now:

All Chile's 33 bishops offer to resign
Police shoot gunman at Trump-owned resort
Crisis meeting after Ebola spreads to city
EU moves to avoid US-Iran sanctions

Some of those could be understood as really in the present (the bishops are offering, the EU is moving), but all of them are things that have already happened (the bishops have offered, police have shot, Ebola has spread, the EU has moved).

The report on the Karnataka story is an interesting example. Under Asia, the headline is a noun phrase with no tense: The lawmakers guarded in 'secret locations'. When you click into it, it expands to a present form: The Indian lawmakers being guarded in 'secret locations'

please help me clear my concepts one by one from the concept above.

1. I don't understand what this point mean here 'The lawmakers guarded in 'secret locations'. When you click into it, it expands to a present form'

2. If the sentence, 'the EU is moving' express the future event, it should be 'EU moving to avoid US-Iran secctions'. Why is it in the present tense 'EU moves to avoid US-Iran sanctions'

3. Or is it possible to use present tense for both the future events and the present progressive events for news headlines like below:

'The BJP is winning/ going to wining the poll' <> 'Tthe BJP winning the poll'<> 'The BJP wins the poll'---------------future event

'The public are waiting in front of banks for money' <> 'the public waiting in fronts of banks for money' <> 'the public wait in front of banks for money'-------------- Present progressive event

I am confused. Please help me understand the concept