The present continuous is formed with -- am/is/are + present participle.
The present participle is verb + ing eg happening
So present continuous tense of happen would be -- is happening, are happening.
It is hard to think of a use for am happening so maybe this one is not possible.
"IT is happen" does not mean anything; "it is happening" is a Present Tense - a Continuous Present Tense, to be more specific (not a "word").
The present continuous tense is used to talk about an action that is happening now as well as actions that will happen in the future.
The present continuous tense is used to show something that happen in the past and continued up until to the present now.
The present continuous tense of stop is:I am stopping.He/She/It is stopping.You/We/They are stopping.
The present continuous tense of lay:I am laying.You/We/They are laying.He/She/It is laying.
Yes, "will be featured" is not in the present continuous tense; it is in the future passive voice. The present continuous tense typically uses the form "am/is/are + verb-ing," such as "is being featured." In contrast, "will be featured" indicates that something is planned or expected to happen in the future.
The present continuous tense of "do" is:I am doingWe are doingYou are doingHe/she is doingThey are doing
The present continuous tense of study is:I am studying.You/we/they are studying.He/she/it is studying.
The present continuous tense:I am shying.You/We/They are shying.He/She/It is shying.
There are five tenses: 1.simple present 2.present continuous 3.present perfect 4.present perfect continuous 5. present passive
I am lying.He/she/it is lying.You/we/they are lying.
The present continuous tense of 'precede' is:I am preceding.You/We/They are preceding.He/She/It is preceding.