If he missed something at the beginning of Taraweeh, how can he make it up?

If I enter the mosque late for 'Isha' prayer and I missed the 'Isha'
prayer incongregation and I pray iton my own, and I am late in joining
the Taraweeh prayers because of doing 'Isha', and I miss two rak'ahs
of Taraweeh, how should I do these two rak'ahs? Alone or what?.
Praise be to Allaah.
Firstly:
If you miss 'Isha' and you arrive when the imam is praying Taraweeh,
it is better for you to join him with the intention of praying 'Isha'.
When he says the salaam, you should complete your prayer and not pray
aloneor with another jamaa'ah (congregation), so that there will not
be two jamaa'ahs at the same time, which may lead to distraction due
to the intermingling of voices.
Secondly:
As for what you have missed of Taraweeh, if you wish you may do it, so
you may pray two rak'ahs when the imam prays Witr, then pray what you
missed, then pray Witr.
What is meant by prayingtwo rak'ahs when the imam prays Witr is that
you do not say salaam with him when he ends his Witr, rather you
should stand up and pray another rak'ah, then say the salaam.
Shaykh Ibn 'Uthaymeen (may Allaah have mercy on him) was asked: If I
join the people when theyare praying Taraweeh andI have missed part of
it, should I make up what I have missed after Witr or what should I
do?
He replied: Do not make up what you have missed after Witr, rather if
you want to make up what you have missed, then pray two rak'ahs when
the imam prays Witr, thenoffer the prayers you missed, then pray Witr.
Here there is an issue to which attention should bedrawn: If you
arrive whenthe imam is praying Taraweeh and you did notpray 'Isha'
yet, what should you do? Should you pray 'Isha' on your own or join
the imam in Taraweeh with the intention of praying 'Isha'?
The answer is that you should join the imam in Taraweeh with the
intention of praying 'Isha'.When the imam says salaam from Taraweeh,
then stand up and make up the rest of 'Isha'. ImamAhmad (may Allaah
have mercy on him) mentionedthe exact same issue, and this was also
the view favoured by Shaykh al-Islam Ibn Taymiyah, and this is the
correct view, because the correct view is that it is permissible to
offer an obligatory prayer in congregation behind an imam who is
offering a naafil prayer, based on the evidence of the hadeeth of
Mu'aadh ibn Jabal (may Allaah be pleased with him) who said that he
used to pray 'Isha' with the Prophet (peace and blessings of Allaah be
upon him), then he would go back to his people and lead them in
offering that prayer – it was naafil for him and obligatory for them.
End quote from al-Liqa' al-Shahri.
It is better for you to make it up in congregation if you can, but if
that is not possible then there is nothing wrong with you making itup
on your own.
And Allaah knows best.