Glossary entry (derived from question below)
English term or phrase:
Artist therefore agree that to the best of his/her ability
Portuguese translation:
o artista obriga-se a tomar todas as medidas razoáveis ao seu alcance...
English term
Responsible, trustworthy and accurate
Native in: Portuguese (Variant: European/Portugal) 
, Spanish (Variant: Standard-Spain)
Works in: English to Portuguese, Spanish to Portuguese, Portuguese to Spanish, and 6 more.
Artist therefore agree that to the best of his/her ability
PT_PT se faz favor
Non-PRO (1): Mauro Lando
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Proposed translations
Portugal
Maria Teresa Borges de Almeida 
30+ years translating EU documents
Native in: Portuguese (Variant: European/Portugal)
Works in: English to Portuguese, French to Portuguese, Spanish to Portuguese, and 1 more.
o artista obriga-se a tomar todas as medidas razoáveis ao seu alcance...
| Não percebo como não aparece o comentário de agradecimento e a escolha da sua proposta... |
| agree |
expressisverbis
5 hrs
|
|
Obrigada!
|
|
| agree |
andrescardoso
: Penso ser uma boa sugestão.
22 hrs
|
|
Obrigada, Andres!
|
Will do!
Native in: Portuguese (Variant: European/Portugal)
Works in: English to Portuguese, French to Portuguese, German to Portuguese, and 1 more.
na medida das suas capacidades
| agree |
Rui Domingues
5 mins
|
|
Obrigada, Rui!
|
|
| agree |
Ana Catarina Lopes
45 mins
|
|
Obrigada, Ana Catarina!
|
|
| agree |
Francisco Fernandes
1 hr
|
|
Obrigada, Francisco José!
|
|
| agree |
Clauwolf
1 hr
|
|
Obrigada, Clauwolf!
|
|
| agree |
expressisverbis
5 hrs
|
|
Obrigada, expressisverbis!
|
na medida de suas possibilidades
Brazil
German, English, Spanish to Portuguese!
Native in: German (Variant: Germany) 
, Portuguese (Variant: Brazilian)
Works in: German to Portuguese, English to Portuguese, English to German, and 2 more.
Discussion
Explicação:
1 - se fosse 'o artista' o verbo estaria conjugado (agrees);
2 - o termo "na medida do possível" é mais natural;