The families of condemned Australians Andrew Chan and Myuran Sukumaran will take their plea for mercy to Jakarta as lawyers for the pair plan their next legal move.

Sukumaran’s mother, Raji Sukumaran, and others will meet the National Commission on Human Rights (Komnas HAM) and are expected to make an appeal outside the presidential palace.

President Joko Widodo is overseas on Monday however, for a bilateral meeting with the Philippines in Manila.

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Komnas HAM Commissioner Natalius Pigai says the organisation supports the efforts of the families and has promised to continue lobbying Mr Joko to change his stance on the death penalty.

“We should work together, there’s still time to annul this execution,” he told AAP.

The Australian and Indonesian lawyers of Chan, 31, and Sukumaran, 33, will announce their latest legal efforts at a media conference in Jakarta on Monday.

The ringleaders of the so-called Bali Nine face execution this month for the 2005 heroin smuggling operation.